A proppant discharge system includes a container having an outlet formed at a bottom thereof, a gate affixed at the outlet and positioned on the floor of the container so as to be movable between a first position covering the outlet to a second position opening the outlet, a support structure having the container positioned on the top surface thereof. The support structure has at least one actuator affixed thereto. The actuator is positioned so as to move the gate between the first position and the second position. The container has a cage affixed on the floor thereof in a position over the outlet. The gate is positioned within the cage and is movable by the actuator so as to open the gate so as to allow proppant to be discharged therefrom.
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14. A process for providing fracking proppant to a well site, the process comprising:
providing a plurality of proppant containers, each of the plurality of proppant containers comprising:
lateral sidewalls, one or more of the lateral sidewalls having one or more lateral wall dividers,
a top,
a bottom distal from the top,
an outlet in the bottom,
ramps extending upwardly at an angle from the bottom toward the lateral sidewalls and each ramp of the ramps terminating at a portion lower than a vertical extent of the lateral sidewalls, the ramps positioned to funnel the proppant toward the outlet;
an inner volume at least partially defined by the top, bottom and lateral sidewalls, and
a gate adjacent the outlet, the gate being moveable between an open position and a closed position to enable the proppant to flow out of the inner volume;
loading each of the plurality of containers with the delivered proppant at the loading station, such that the inner volume is substantially filled with proppant, the proppant substantially being evenly distributed in the inner volume of each of the one or more containers upon loading completion;
positioning each of the plurality of containers on a top surface of a support structure positioned at the well site, the support structure having spaced apart rails extending continuously from a first end to a second end and being positioned to receive the plurality of the containers thereon so that the plurality of containers are arranged in a side-by-side arrangement and separately moveable on and off of the support structure; and
discharging the loaded proppant from one or more of the plurality of containers positioned on the support structure by selectively moving the gate so that the proppant flows from within the inner volume through the outlet.
1. A process for providing fracking proppant to a well site, the process comprising:
delivering the proppant to a loading station, the proppant having a substantially round, spherical shape and a tightly-graded particle distribution;
providing a plurality of proppant containers, each of the plurality of proppant containers comprising:
lateral sidewalls,
a top,
a bottom distal from the top,
an outlet in the bottom,
ramps extending upwardly at an angle from the bottom toward the lateral sidewalls and each ramp of the ramps terminating at a portion lower than a vertical extent of the lateral sidewalls, the ramps positioned to funnel the proppant toward the outlet along substantially smooth, planar surfaces and being surrounded by the sidewalls extending to the bottom;
an inner volume defined by the top, bottom and lateral sidewalls enclosing the ramps within the inner volume, and
a gate adjacent the outlet, the gate being moveable between an open position and a closed position to enable the proppant to flow out of the inner volume;
loading each of the plurality of containers with the delivered proppant at the loading station, such that the inner volume is substantially filled with proppant, the proppant substantially being evenly distributed in the inner volume of each of the one or more containers upon loading completion;
transporting each of the plurality of containers to the well site;
positioning each of the plurality of containers on a top surface of a support structure positioned at the well site, the support structure having spaced apart rails extending continuously from a first end to a second end and being positioned to receive the plurality of the containers thereon at discrete cradles so that the plurality of containers are arranged in a side-by-side arrangement and separately moveable on and off of the support structure; and
discharging the loaded proppant from one or more of the plurality of containers positioned on the support structure by selectively moving the gate so that the proppant flows from within the inner volume through the outlet.
2. The process of
providing a single container of the plurality of containers on a trailer of a truck at the loading station after the single container is loaded with proppant; and trucking the single container by the truck from the loading station to the well site.
3. The process of
storing the plurality of containers at the loading station prior to the step of transporting the containers by stacking a first container of the plurality of containers on top of a second container of the plurality of containers; and
storing the discharged containers at the well site in a stacked arrangement.
4. The process of
moving one of the plurality of containers having proppant stored therein with a forklift from the loading station onto a trailer or a bed of a truck;
removing the one of the plurality of containers from the trailer or bed of the truck with a forklift; and
transporting the one of the plurality of containers by the forklift to the support structure to position the one of the plurality of containers directly on the top surface of the support structure and upstream of a conveyor that transports proppant from the one of the plurality of containers to a location at the well site.
5. The process of
discharging the loaded proppant from one or more of the plurality of containers into a hopper, the hopper positionally extending below the support structure.
6. The process of
discharging the loaded proppant from the hopper into a tubular member.
7. The process of
applying compressed air to the tubular member so as to draw the proppant along a length of the tubular member for delivery to the well site.
8. The process of
applying a screw conveyor to the tubular member so as to draw the proppant along a length of the tubular member for delivery to the well site.
9. The process of
10. The process of
11. The process of
12. The process of
13. The process of
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Not applicable.
Not applicable.
Not applicable.
Not applicable.
1. Field of the Invention
The present invention relates to storage containers. More particularly, the present invention the relates to proppant discharge systems wherein proppant can be discharged from the storage container. Additionally, the present invention relates to a process for providing proppant to a well site by the transport and delivery of the proppant containers.
2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 37 CFR 1.98
Hydraulic fracturing is the propagation of fractions in a rock layer caused by the presence of pressurized fluid. Hydraulic fractures may form naturally, in the case of veins or dikes, or may be man-made in order to release petroleum, natural gas, coal seam gas, or other substances for extraction. Fracturing is done from a wellbore drilled into reservoir rock formations. The energy from the injection of a highly-pressurized fracking fluid creates new channels in the rock which can increase the extraction rates and ultimate recovery of fossil fuels. The fracture width is typically maintained after the injection by introducing a proppant into the injected fluid. Proppant is a material, such as grains of sand, ceramic, or other particulates, that prevent the fractures from closing when the injection is stopped.
With the rise of hydraulic fracturing over the past decade, there is a steep climb in proppant demand. Global supplies are currently tight. The number of proppant suppliers worldwide has increased since 2000 from a handful to well over fifty sand, ceramic proppant and resin-coat producers.
By the far the dominant proppant is silica sand, made up of ancient weathered quartz, the most common mineral in the Earth's continental crust. Unlike common sand, which often feels gritty when rubbed between the fingers, sand used as a proppant tends to roll to the touch as a result of its round, spherical shape and tightly-graded particle distribution. Sand quality is a function of both deposit and processing. Grain size is critical, as any given proppant must reliably fall within certain mesh ranges, subject to downhole conditions and completion design. Generally, coarser proppant allows the higher flow capacity due to the larger pore spaces between grains. However, it may break down or crush more readily under stress due to the relatively fewer grain-to-grain contact points to bear the stress often incurred in deep oil- and gas-bearing formations.
Typically, in any hydraulic fracturing operation, a large amount of such proppant is required. Typically, it has been difficult to effectively store the proppant at the fracturing sites. Additionally, it has been found to be rather difficult to effectively transport the proppant to the desired location. Often, proppant is hauled to the desired locations on the back of trucks and is dumped onsite. Under such circumstances, the proppant is often exposed to adverse weather conditions. This will effectively degrade the quality of the proppant during its storage. Additionally, the maintenance of proppant in containers at the hydraulic fracturing site requires a large capital investment in storage facilities. Typically, the unloading of such storage facilities is carried out on a facility-by-facility basis. As such, there is a need to be able to effectively transport the proppant to and store the proppant in a desired location adjacent to the hydraulic fracturing location.
U.S. patent application Ser. No. 13/427,140, filed on Mar. 22, 2012 by the present inventor, describes a system of the delivery of proppant between a loading station and the well site. This application describes the steps of placing the storage container in a location adjacent to a train site such that the proppant, as delivered by the train, can be discharged into the container. The container can then be transported for storage in stacks at the loading area or can be delivered to a tilting mechanism at the loading station. The tilting station will tilt the container so as to allow the proppant to flow outwardly therefrom. This proppant will flow, by a conveyor, to a pneumatic truck. The truck can then transport the proppant over the highways to the well site. At the well site, the proppant from the pneumatic truck can then be discharged into a twenty foot container at the well site. These twenty foot containers can be stored at the well site in a stacked configuration. Ultimately, each of the containers can be transported to another tilting mechanism at the well site so that the proppant within each of the storage container can be discharged onto a conveyor and ultimately for use during the fracturing operation.
One of the problems with this system is that each of the containers is handled by various types of equipment and at multiple times. Ultimately, heavy-duty equipment is required to move a twenty foot container that is filled with proppant from one location to another. This heavy-duty equipment can be extremely expensive. Additionally, since the container, along with the proppant therein, is subject to repeated handling, there is a possibility of degradation of the proppant within the container. Ultimately, every time the proppant is loaded, discharged, loaded again, and then discharged, it is subject to wear-and-tear and degradation. As such, a need has developed so as to avoid the multiple handlings of the proppant and the proppant storage container.
In normal use, a twenty foot container can hold 96,000 pounds of proppant. However, weight limits imposed on trucks by highway authorities limit the amount of weight that can be carried to 48,000 pounds. As such, in order to comply with the law, it is only possible to pour approximately 45,000 pounds of proppant into the container. This only partially fills the container and leaves a great deal of wasted space within the container. As such, it has been felt to be impractical to utilize transported containers to move the proppant from the loading station directly to the well site.
Whenever a twenty foot container is loaded with proppant, the proppant tends to pile up in a pyramid shape. As such, there is a great deal of wasted space within the container. If the container is not tilted at a rakish angle, there will always remain a certain quantity of proppant that remains within the container. It was not felt possible to place an outlet at the floor of the container since such an outlet on a twenty foot container would be ineffective in allowing the proppant to be discharged fully from the interior of such a container.
Demurrage is continual problem for well-site operators. Demurrage is the charge, by the trucking companies, of having the truck in a position waiting for loading or discharging. In other words, demurrage covers the idle time associated with a truck on a particular project. If trucks were used so as to move the twenty foot container from the loading station at a drill site, each of the trucks would have to wait until the proppant was required at the drill site. At that time, the container can be removed from the truck and positioned so as to be discharged. Ultimately, the truck would have to wait until the container was fully discharged before it could take the empty container back to the loading station. This waiting time significantly increases the cost of demurrage to the well-site operators. Additionally, and furthermore, as the containers are being loaded at the loading station, each of the trucks will have wait in order to receive a particular load. As such, it is often felt possible to properly use the typical twenty foot storage containers for proppant delivery and storage.
In the past, various patents have issued relating to storage and transport facilities. For example, U.S. Patent Publication No. 2008/0179054, published on Jul. 31, 2008 to McGough et al., shows a bulk material storage and transportation system. In particular, the storage system is mounted on the trailer of a truck. The storage system includes walls that define an interior volume suitable for receiving the aggregate material therein. There are hoppers provided at the bottom of the container. These hoppers have inclined walls. The hoppers can extend so as to allow the material from the inside of the container to be properly conveyed to a location exterior of the container. Actuators are used so as to expand and collapse the container.
U.S. Pat. No. 7,240,681, issued on Jul. 10, 2007 to L. Saik, describes a trailer-mounted mobile apparatus for dewatering and recovering formation sand. The trailer is mounted to a truck-towable trailer so as to receive sand therein. The container has a pair of sloping end walls. The back end of the container is suitably openable so as to allow the sand to be removed therefrom. A pneumatic or hydraulic ram is provided on the forward part of the container so as to allow the container to be lifted angularly upwardly so as to allow sand to be discharged through the gate at the rear of the container.
U.S. Pat. No. 4,247,228, issued on Jan. 27, 1981 to Gray et al., describes a dump truck or trailer with a pneumatic conveyor. The container is mounted to a frame on wheels. A hydraulic ram tilts the container for dumping through a rear outlet. A pneumatic conveyor is carried by the frame with an intake at the rear of the container. A gate allows the solids to be dumped conventionally by gravity or to be blown to a storage facility by the pneumatic container. The container has a top hatch formed therein so as to allow the solids to be introduced into the interior of the container.
U.S. Pat. No. 2,865,521, issued on Dec. 23, 1958 to Fisher et al., shows a bulk material truck that has an interior volume suitable for the receipt of bulk material therein. A pneumatic conveyer is utilized so as to allow the removal of such material from the bottom of the container. A pair of sloping walls are provided on opposite sides of the container so as to allow the bulk material within the container to be passed toward the bottom of the container. A top hatch is provided on the top of the conveyer. The pneumatic conveyer is connected to the bottom of the container.
It is an object of the present invention to provide a proppant storage container that allows proppant to be easily transported and stored.
It is another object of the present invention to provide a proppant storage container that allows the proppant to be easily and efficiently discharged to the bottom of the container.
It is another object of the present invention to provide a proppant storage container which allows for the effective storage of proppant at the fracturing site.
It is another object of the present invention to provide a process for delivering proppants that eliminates the use of pneumatic trailers.
It is further object of the present invention to provide a proppant storage container and a process for delivering proppant in which of the containers can be moved by a simple forklift.
It is another object of the present invention to provide a process for delivering proppants which effectively eliminates demurrage associated with the loading station and at the well site.
It is a further object of the present invention to provide a process of the deliver proppant which avoids the degradation of the proppant as a result of repeated handling.
It is a further object of the present invention to provide a proppant discharge system which provides a premeasured amount of proppant to the drill site.
It is still another object of the present invention to provide a proppant container which satisfies highway regulation and which has less void space within the interior of the container.
These and other objects and advantages of the present invention will become apparent from a reading of the attached specification and appended claims.
The present invention is a container for the transport and storage of proppant. The container comprises a box having a floor and pair of side walls and a pair of end walls and a top. The box has an inlet formed at or adjacent to the top. The box has an outlet formed at the floor thereto. A gate is affixed at the outlet and positioned on the floor and within the container. The gate is movable in a vertical direction between a first position covering the outlet to a second position opening the outlet.
In the container of the present invention, a first ramp is affixed to the floor of the box adjacent one side of the outlet. This first ramp extends angularly upwardly from the outlet toward one of the pair of end walls. A second ramp is affixed to the floor of the box adjacent an opposite side of the outlet. This second ramp extends angularly upwardly from the outlet toward another the pair of end walls. A cage is affixed onto the floor of the box in a positioned over the outlet. This cage has a slotted opening on a surface thereof. The gate is positioned within the cage so as to have a surface covering the slotted opening when the gate is in the first position. The surface of the gate opens the slotted opening when the gate is in the second position. In the preferred embodiment of the present invention, the cage has a rectangular configuration having a plurality of sides. Each side of the plurality of sides of the cage has the slotted opening formed therein. The plurality of sides extend in transverse relationship to the floor of the box. The gate has a plurality of sides respectively covering the slotted opening of the plurality of sides of the cage when the gate is in the first position. A cover extends over a top of the cage. This cover is positioned above the slotted opening. The cover will have an inverted V-shape exterior surface.
In the present invention, the container is known as a ten foot ISO container. In other words, the container has a length of ten feet and a width dimension of eight feet and a height of eight and one-half feet. This container can receive approximately 45,000 pounds of proppant therein.
The present invention is also a proppant discharge system that comprises a container having a floor and a pair of side walls and a pair of end walls and top, and a support structure having a top surface and at least one actuator affixed thereto. The container is removably positioned on the top surface of the support structure. The container has a gate affixed to the outlet and positioned on the floor within the container. The gate is movable between a first position covering the outlet to a second position opening the outlet. The actuator of the support structure is positioned so as to move the gate between the first position to the second position.
In one embodiment of the present invention, a conveyor underlies the top surface of the support structure so as to receive proppant as discharged from the outlet of the container when the gate is moved by the actuator to the second position. The support structure has a frame extending in a horizontal plane. The top surface is formed on this frame. A plurality of legs extend downwardly from the frame so as to support the frame above an underlying surface. The actuator extends across the frame below the top surface thereof.
In another embodiment of the present invention, there is a tubular member that underlies the support structure. The tubular member has a plurality of hoppers communicating therewith. Each of the hoppers is positioned below the outlet of the container. As such, when proppant is discharged from the outlet of the container, the proppant will flow into the hopper and into the tubular member. Compressed air is applied to the tubular member so as to draw the proppant along the length of the tubular member for delivery to a desired location. A Venturi can be incorporated into the tubular member so as to facilitate the delivery of the proppant to the desired location. The tubular member is the nature of a flexible hose. As such, the support structure can be positioned relatively remotely from the well site and the hose extended to a stand storage and conveying facility located at the well site. As such, the support structure of this embodiment of the present invention will not interfere with day-to-day operations at the well site. Additionally, a screw conveyor can be utilized in association with the tubular member instead of compressed air.
The actuator includes a pair of channels that are affixed to and extend downwardly from the frame. A cross member has a first end received in one of the pair of channels and an opposite end received in the other of the pair of channels. An actuator cylinder is received in at least one of the pair of channels. The actuator cylinder is cooperative with the cross member so as to move the cross member between an up position and a down position. At least one arm is affixed to the cross member at a location between the ends thereof. The arm extends upwardly from the cross member. The arm has an end that is suitable for bearing against the gate of the container. The gate is in the first position when the cross member in the down position. The gate is in the second position when the cross member is in the up position. In the preferred embodiment of the present invention, the cross member has a rectangular structure formed centrally between the ends thereof. This rectangular structure has a plurality of corners. The arm comprises a plurality of arms respectively extending upwardly from the plurality of corners.
The container can include a plurality of containers that are removably positioned in side-by-side relationship on the top surface of the support structure. The actuator can include a plurality of actuators positioned so as to be cooperative with the respective gates of the plurality of containers. As such, a multiplicity of the containers can be placed upon the support structure so as to properly deliver measured amounts of proppant, by way of the conveyor or tubular member, to the well site.
The present invention is further a process for providing proppants to a well site. This process includes the steps of: (1) delivering proppant to a loading station; (2) loading a plurality of containers with the delivered proppant at the loading station; (3) transporting the containers to the well site; (4) positioning the plurality of containers on a support structure; and (5) discharging the loaded proppant from the plurality of containers positioned at the well site.
Each of the plurality of containers is a ten foot ISO container. Each of the of the plurality of containers has an outlet at a floor thereof. The step of transporting includes positioning a single container of the plurality of containers on a trailer or bed of a truck, and trucking the single container by the truck from the loading station to the well site.
Each of the loaded containers is moved by a forklift from the loading station onto a trailer or bed of a truck. The loaded container is removed from the trailer or bed of the truck with a forklift. This loaded container is then transported by the forklift to the support structure. The discharged proppant is conveyed from the support structure to the well site.
Alternatively, the discharged proppant can be moved by compressed air or a screw conveyor through a tubular member to a location at the well site.
Each of the plurality of containers has a gate affixed within an exterior of the container at an outlet thereof at a floor of the container. The gate is movable vertically between a first position closing the outlet and a second position opening the outlet. The step of discharging includes applying an upward force to the gate so as to move the gate from the first position to the second position.
The plurality of containers can be stored at the loading station prior to the step of transporting the containers. The discharged containers can be stored at the well site.
Within the concept of the present invention, only a single loaded container can be transported by a truck in order to meet the weight requirements of highway regulations. On the other hand, a plurality of such containers can be placed on the bed or trailer of a truck when the containers have been discharged.
The foregoing section is intended to describe, with particularity, the preferred embodiment of the present invention. It is understood that variations in this preferred embodiment can be made within the scope of the present invention. As such, this section is not intended to be limiting, in any way, of the scope of the present invention. The present invention should only be limited by the following claims and their legal equivalents.
Referring to
Typically, containers will have a length of twenty feet and width of ten feet. However, for the purposes of delivering and moving proppant, such twenty foot containers are not practical. When proppant would be introduced into the inlet of a twenty foot container, it would tend to assume a very pyramid-shape arrangement within the interior volume of such a container. As such, there would be a very large amount of void space. Additionally, and furthermore, when a twenty foot container is filled with proppant, it will weigh approximately nine-six thousand pounds. This weight is too great for transport on highways. Highway regulations effectively prevent the movement of such amount of weight thereon. As such, in order to comply with highway requirements, it would be necessary for each twenty foot container to be approximately half-filled. As such, there would be a significant amount of wasted space in such twenty foot container.
The present ten foot ISO container, as shown in
In normal use, a plurality of such containers 10 would be located at a loading station. This loading station can be rail site. A train having hopper cars that carry the proppant can be moved to this loading station. The proppant from the hopper cars can then be discharged, by a conveyor, directly into the inlet 24 of the container 10. This discharging will continue until such time that the container 10 is filled with proppant. As that time, the filled container 10 can then be transported by a forklift from the loading station onto the bed or trailer of a truck. The truck can then transport the filled container 10 to the support structure at the well site. Alternatively, if no trucks are available after the loading of the container 10, the container 10 can be easily placed and stacked at the loading station. As such, they will be conveniently available at such time as a truck arrives at the loading station. Under such a circumstance, the container 10 will be available for loading. This effectively avoids any demurrage associated with a truck waiting to be loaded. Several forklifts could be available at the loading station so as to allow the trucks to be continually loaded with the containers 10.
The cage 36 is supported on the bottom 42 of the gate system 30. Cage 36 has a plurality of slotted openings formed therein. In
In normal use, when the gate system 30 is placed within the interior of the container 10, a significant amount of sand will reside thereover. The inverted V-shape shape of the cover 40 will tend to deflect the sand in a direction downwardly toward the ramps 32 and 34. The ramps 32 and 34 further direct the sand toward the slotted openings associated with the cage 36. As such, the weigh of the sand will bear against the sides of the gate 38 until such time that the gate 38 is pushed upwardly so that the slotted openings of the cage 36 are open. When the slotted openings of the cage 36 are open, the sand will move downwardly through the openings for discharge.
The support structure 100 includes a frame 112 that has the top surface 102 thereon. Frame 112 has longitudinal rails 114 and 116 extending in parallel relationship to each other. End rails 118 and 120 extend between the rails 114 and 116 so as to create a rectangular-frame that extends in a horizontal plane. A plurality of legs 122 extends downwardly from the frame 112 so as to support the frame 112 above an underlying surface. It can be seen that the actuators 104, 106, 108, 110 and 112 will extend in spaced parallel relationship to each other between the rails 114 and 116. The actuator 112 is illustrated as having a first channel 124 and a second channel 126 extending downwardly, respectively, from the rails 114 and 116 of frame 102. The actuator 112 will have a cross member 128 extending between each of the channels 124 and 126. A first actuator cylinder can be placed within the channel 124 and a second actuator cylinder can be placed within the channel 126. The actuator cylinders will bear upon the cross member 128 so as to provide the requisite movement of the cross member 128 between a down position and an up position. The actuator 112 includes a plurality of arms 130 which extend upwardly from the cross member 128. The arms 130 will serve to bear on, engage and push upwardly on the gate 38 when the actuator cylinders move the cross member 128 from the down position to the up position. In
In normal use, the truck can been loaded with a single container 10. The containers 150, 152, 154, 156 and 158 will have a configuration identical to that of container 10. Since each of the containers 150, 152, 154, 156 and 158 have forty-five thousand pounds of proppant therein, only a single container can be transported by a truck along the surface of a highway. The weight of each of the containers will be safely within the weight regulations associated with highways. The weight of each of the containers will prohibit more than one container from being placed upon the bed or trailer of a particular truck.
Once the single container has been placed on the bed or trailer of a truck, the truck can transport the container to the well site. A forklift is located at the well site. This forklift can engage the fork receptacles 26 and 28 on each of the containers so as to move the container from the bed or trailer of the truck to a particular location on the support structure 100. The support structure 100 will allow up to five containers to be placed thereon at a single time. However, within the concept of the present invention, fewer containers can be placed upon the support structure 100. As such, the support structure 100 will allow the well operator to selectively choose the amount of proppant that is delivered by the conveyor 160. For example, if ninety thousand pounds of proppant is required, then two containers can be opened by the actuators so as to receive a measured amount of ninety thousand pounds of proppant. Once the measured amount of proppant has been delivered by way of the conveyor 60, the empty container can then be removed, by a forklift, from the support structure 100. The empty container can then be stacked or stored at the well site. Alternatively, the empty container can then be loaded onto the bed or trailer of any truck that may be at the well site. For example, if the truck has the single filled container removed therefrom, then up to four empty containers can be placed on the bed or trailer of the truck immediately after the loaded container is removed. As a result, the present invention effectively reduces or eliminates any demurrage that may occur by virtue of the truck remaining at the well site. Alternatively, any empty containers that have been stored or stacked at the well site can be immediately placed upon the bed or trailer of the truck once the truck has the filled container removed therefrom.
The remaining filled containers can remain on the support structure 100 until such time as proppant is required. The empty containers can be replaced with filled containers during that time. As such, as illustrated in
The time that a sufficient amount of proppant has flowed outwardly of the container 10 or at the time that the container 10 is empty, the cylinders 174 and 176 will cause the pistons 178 and 180 to return back to the down position so that the gate 38 will reassume the position as shown in
The container 202 is positioned upon the support structure 200 adjacent to the actuator 218. As such, the gauge of the container 202 will be positioned directly above a hopper 220 located below the actuator 218. Similarly, the container 204 is positioned on the support structure 200 above the actuator 222. A hopper 224 will be positioned directly below the gate of the container 204. The container 206 is also positioned on the top surface of the support structure 200 above the actuator 226. A hopper 228 will be positioned directly below the gate of the container 206. Containers 202, 204 and 206 have an identical configuration to the containers described herein previously. Similarly, the actuators 218, 222 and 226 will have a configuration similar to the actuators described hereinabove.
The hoppers 220, 224 and 228 will communicate with the interior of a tubular member 230. The tubular member 230 is in the nature of a hose which will extend along the earth 216 and will extend directly below the top surface of the support structure 200. When the proppant is discharged the gates of container 202, 204 and 206, will flow downwardly into the respective hoppers 220, 224 and 228 so as to be discharged into the interior 232 of the tubular member 230.
In order to move the sand from the interior 232 of the tubular member 230, there is a blower 234 that serves to produce compressed air. Compressed air is directed toward a Venturi 236 so that the forces generated by the Venturi will effectively set the proppant along the tubular member 230 so as to be discharged through a hose 238 to the sand conveyor 240. The sand conveyor 240 can be in the nature of a SAND KING™. These sand conveyors are positioned directly at the well site so as to directly deliver the sand to the well.
In the embodiment of the system of the present invention, as shown in
Various modifications to the system shown in
The foregoing disclosure and description of the invention is illustrative and explanatory thereof. Various changes in the details of the illustrated construction or in the steps of the described method, can be made within the scope of the appended claims without departing from the true spirit of the invention. The present invention should only be limited by the following claims and their legal equivalents.
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